影响杜洛克猪新品系60日龄窝重繁殖性状因素的相关性分析

Abstract

Abstract: The major breeding traits which affected the litter weight of new line Duroc pigs at 60-day-old were found by using path coefficeient,determination coefficient and multi-factor gradual regression analysis.60-day litter size,20-day litter size,60-day weight and 20-day weight had great influence, but the birth weight,liveborn weight and number born alive had little influence .The optimal regression equation which affected the litter weight at 60-day-old was Y=2.1836X⁴-15.6442X⁵-11.4572X⁶+ 18.192X⁷+6.9936X⁸-44.6259.

Key words: new line Duroc pigs; 60-day litter weight; correlation analysis

CLC Number:

S813

HUA Sheng;MEI Shu-qi;PENG Xian-wen. Correlation Analysis of Breeding Traits Affecting the Litter Weight of New Line Duroc Pigs at 60-day-old[J]. China Animal Husbandry & Veterinary Medicine, 2009, 36(12): 204-206.

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Correlation Analysis of Breeding Traits Affecting the Litter Weight of New Line Duroc Pigs at 60-day-old

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